When dot alignment work is processing at different work distances, different from a simple green laser pointer, it makes a better job with a direct diode emission made device of a 520nm green laser diode module. Being made with an import laser diode, not limited by temporary dot positioning work, it gets better thermal emitting from inner metal heat sink cooling system and APC, ACC driving circuit board. It enables long lasting green dot projection within 10 hours, and up to 85% laser beam stability in continuous use. 
This laser diode module applies a qualified glass coated lens inside a durable anodized aluminum alloy housing tube, which allows highly clear and stable green dot projection under multiple working occasion, including mechanical moving or shocking as well. When it emits high density green laser beam emission at long extending distance, within the longest work distance of 25 meters and formal lighting occasions, it brings users high precision and high stability green dot alignment for all precise machinery processing works constantly. 
Applications: industrial device manufacturing, laser marking, laser engraving, drilling system, military targeting, lab experiment 

Different from a formally used 532nm green DPSS laser system, the real use of a 515nm green dot laser alignment always makes longer time lasting dot projection from beam aperture. It applies an import 515nm green laser diode within 5mW to 50mW as beam emitting source. Being made with cooling system and APC, ACC driving circuit board inside different dimension metal housing tube, it keeps work with constant forest green laser beam and green dot projection, and long serving lifetime in proper use. 
This green alignment laser applies 5V, 9V 1000mA AC/DC adapter, which enables long lasting forest green laser beam and green dot projection within 10 hours per day, not effected by increasing temperature and serious electric current impact as well. It keeps work with high density forest green laser emission, after easy adjustment of laser beam focus, it gets increasing accuracy and brightness green dot projection for all industrial machinery processing works effectively.
Applications: industrial device manufacturing, laser marking, laser engraving, drilling system, military targeting, high tech

Until the time users are trying to make ultra clear dot indication for a quite long time, not relying on a simple green laser pointer, it is a better substitute to operate a 5mW 532nm green dot laser alignment. Employed by a middle wavelength 532nm green DPSS laser system, owing to its low laser beam divergence and special TEM00 laser beam mode, it enables high brightness green laser light source emission and highly clear green dot projection for inner room and close distance dot positioning work.

After quite easy use of a 5V, 1000mA DC power supply, this 16mm diameter metal housing tube made green alignment laser makes sure of constant green laser beam and green dot projection. It allows long lasting dot indication within 8 to 1 hours, without light decay or blur in continuous use. After easy screw of adjustable focus optic lens, it gets highly concentrated green laser light source and increasing accuracy green dot indication for all material processing works effectively.

Applications: industrial machinery processing, drilling system, laser marking, laser engraving, high tech and lab experiment